. . "Mattie Moss Clark"@en . . "1925Z"^^ . "American singer" . . . "Dr. Mattie Moss-Clark (born Mattie Juliet Moss; March 26, 1925 - September 22, 1994) was an American gospel choir director and the mother of The Clark Sisters, a world-renowned gospel vocal group. Clark is credited for creating the three-part harmony (separating vocal parts into soprano, alto and tenor), a technique which is prevalent among gospel choirs today."@en . . . "1925-03-26Z"^^ . . . . . . . . "Clark, Mattie Moss"@en . . "1994-09-22Z"^^ . . "1994Z"^^ . . . "solo_singer" . . . . "Mattie Juliet Moss"@en . . . . . "1994Z"^^ . "1958Z"^^ . . . . . . "Dr. Mattie Moss Clark"@en . . .